Omalizumab adherence in an observational study of patients with moderate to severe allergic asthma

Background Adherence to omalizumab is not well characterized and its association with asthma control has not been well established. Objective To evaluate adherence in patients initiating omalizumab in the Epidemiologic Study of Xolair (omalizumab): Evaluating Clinical Effectiveness and Long-term Safety in Patients with Moderate to Severe Asthma (EXCELS) observational study. Methods Adherence was assessed over 5 years using the proportion of...